Vertical scroll rendering issue in Flexbox in Firefox [duplicate]
This has to do with the flexbox specification’s implied minimum sizing algorithm. This is a Firefox bug. Adding min-width: 0; min-height: 0 to #wrapper seems to do the trick: #wrapper { display: flex; flex-grow: 2; flex-basis: 0%; min-height: 0; /* NEW */ min-width: 0; /* NEW */ } DEMO Original Answer Below Currently you have … Read more